Machine for casting stereotype plates



Oct. 20,1925; 1,557,890

V. STEPHAN MACHINE FOR CASTING STEREOTYPE PLATES Filed April 5, 1925 2Sheets-Sheet 1 Fig.4

0a. 20,1925. 1,551,890 V. STEPHAN MACHINE FOR CASTING STEREOTYRE PLATESFiled April 5, 1925 2 Sheefs-Sheet 2 Fig.3

- by means of a joint-lever gearing.

Patented Oct. 20, 1925..

UNITED STATES VIKTOR STEPHAN, OE PILAUEN, GER-MANY.

MACHINE FOB CASTING STEREOTYPE PLATES.

To all whom it may concern:

Be it known that I, VIKTOR STEPHAN, a citizen of the German Republic,and a resident of Plauen, Saxony, Germany, have invented certain 'newand useful Improvements in a Machine for Casting Stereotype Plates, ofwhich the following is a specification.

In the manufacture of machines for casting stereotype plates particularattention must be given to constructing the machines in such manner thatthe shell can be removed easily and quickly from the core on opening themold, in order to facilitate the taking out of the stereotype plate andthe renewal of the matrix. For this reason, as is well known, with anupright mold the shell rests on a curved guide in such manner as to fallautomatically from a perpendicular into a horizontal position, when thecore is lifted, whereby the center of gravity of the shell is neitherlifted nor lowered. With a horizontal mold on the other hand the shellis moved downward in an oblique direction away from the core. Its weighthas for this reason in certain instances been neutralized byappropriately disposed counter-weights. Where this means is not resorted to, however, the mold can only be opened and closed by motorpower and a corresponding expenditure of energy. In all machines now inuse the opening gear of the mold is accordingly very complicated. Inmany instances a number of operations are even necessary to open andclose the mold, which in a printing shop require an expenditure of timewhich is not to be underestimated and which may even lead to blundersand errors.

Compared with devices now in use an essential simplification of themachinery necessary for opening and closing the mold as well as thetending is attained by means of the present invention. This is effectedby allowing the shell to swing likea door on a perpendicular pivot ateither side, whereby it can; readily and quickly be opened and closed aswell as locked in closed position One form of construction of theinvention is shownin the. accompanying drawings, in which Fig. 1 shows avertical section of the casting mechanism. Fig. 2 is a front view, Fig.3 a plan. view of same. Fig. 4 elucidates the locking mechanism ofApplication filed April 3, 1925. Serial No. 20,431.

the opening and closing means of the geat channels of the mold.

The core 2 is fastened to the frame 1:of

the casting machine; A supporting shaft 5 is also supported verticallyin the frame 1 through bearings 3 and 4, said shaft serving as pivot forthe shell 6; The latter can thus swing on the shaft 5 by means of thetwo arms 7 and 8 and their bearing eyes 9 and 10. The weight of theshell is sup ported by means of a roller not shown in the drawing, onthe'plate 25.

A perpendicular shaft '15 is revolubly' mounted in the core 2. Thisshaft is fastened at its upper end to a hand lever 16 provided with acurved piece 17 operating on an adjustable roller 22 on the shell, forthe purpose of locking the shell 6 in closed position. The lower end ofshaft 15*is fastened to a lever 18, on which the guide 20 can turn bymeans of pin 19. The other end of the guide 20engages the lower side ofthe shell 6 by means of a pin 21.

By turning the lever 16 the shell 6 is accordingly not only unlocked onthe roller 22, but the lever 18 is also swung into'the opening position18 shown by dashes and dots in Fig. 3, whereby the guide 20 reaches theposition 20 in the same figure, the shell coming into position 6.VVhen-this has taken place, the previously cast stereotype plate canreadily be taken out and the matrix renewed. In order to safely securethe cast stereotype plate to the core on opening the mold, supportingrods have been provided on the core in a manner yet 'to be described. ID E.

In closing the mold the lever '16 only has to be turned in the describeddirection either by hand or by motor power, whereby the mold is closedat once by means of the time, it is advisable to provide the bearing eye9 of the shell 6 with a lock-disk 26 which is carried along, when themold is opened, and catches a stee'l plate 28 on lever 27 in such mannerthat said lever 27, by means otwhich an opening valve 29 for the geatchannel 30 is governed, cannot be turned. Since lever 27 is furthermoreconnected by means of a rod 31 with lever 32 controlling the opening ofvalve 33'for geat channel 34, the latter cannotbe opened as long as thelock disk 26 is in front of lever 27 or the steel block '28 attached tosame. The lock-disk 26 and the steel plate '28 may further be regulatedwith respect, to each other, so that the opening valves" 29' and 33 canonly be set by means of levers 27, 32 which are governed by hand" lever35, wheii'the m'oldis completely closed;

In'order to secure the :cast' stereotype plate 7 ledges which, however,also serve to securely hold the cast" plate;

The above mentioned tour supporting rods are allowed toslide in thedirection of their aisles in core 2 of the mold and are constructeda'stootli-racks in the middle, so that they can beshifted by means ofcog-. wheels" 45, 46, 47 and 48'. are arranged in pairs on twohorizontal shafts: 49 and 50 turning in frame 1 of the casting machine,said shafts being con nected with each other 'by means of levers 51, 5'3and rods 52 in such a 'manner that both shafts 49 and 50 with theircog-wheels and vby means of the latter all four supporting. rods-41,42,43,44 are uniformly moved. Inordertodrive th-is' mechanism one end of'sh'a'tt 49is'fitted with a bevel-wheel 54' which engages a bevel-wheelsector 55 on a vertical shaft 56, said shaft beingturther fitted with "aroller carrying lever 57. -Th'.e latter "on'opening the mold is moved bythe lateral urve'd surfacen58 provided on lever 18, whereby,- as willre'ad'ilybe-seen, the supporting rods 41, 42, 43 and :44 are moved slihtly OHlBOiEj'thfi core of themold. In doing so'they carry thestereotype plat-e withthem, su-spending'gthe same freely, but

at the "same time securing it tightly,- until it is taken o'tl' by theworkmanten'ding the machine.

I claim-r 1; In a machine for casting stereotype plates, combination:- ashell-mantle; a5

vertical spindle lo'catedlaterally from {said 6,5 mantle and beinghinged fto it another vertical spindle; a joint-lever mechanism Thesecog wheels jointed at one end to the shell-mantle and at the other endto said.v latter spindle; and means to turn this spindle, thearrangement of the parts being such that the said shell-mantle can beopened and closed, as Well as locked in its closed position, by saidjoint-lever mechanism substantially as set forth.

2:111 a machine for casting stereotype plates, in combination: ashell-mantle; a

vertical spindle located laterally from said' mantle and being hinged toit; a' locking disk connected with said shell-mantle;

system of levers controlling the geat channels ot the shell-mantleandbeing adapted:

to'lreep thein closed it the said shell-mantle is not completely closed,substantially as set forth. i

3. In a machine for casting stereotype plates, in combination:shell-mantle; a- Y vertical spindle located laterallyfrom-said' mantleand being hinged to=1t; another vertical spindle a joint-lever mechanisn'joi'ntedat one end to the shell-mantle and at the other end to saidlatter spindle; and means to turnthis spindle, the arrangement of theparts being such that'the said shell mantle can be opened and closed; aswell as locked" in its closed position, by said joint lever' mechanism;a locking disk connected with said'shell-mantleg' iii-system of leverscon-' trolling the geat channels of the shell mantle and being adaptedto keep them closed if the said shell inantle is not completely closed,substantially asset forth 4. In a machine for casting stereotype plates,in combination: a shell-mantle a vertical spindle located-laterally fromsaid" mantle and being hinged to it; anothen vertical spindle; ajoint-lever mechanism jointed at one end to the shellmantle and ,at theother end to said latter spindlegfmea-ns to turn thisspindle; ashell-core arranged on.

the spindle mentioned in the second case; a plurality ot bear ng rodssupported n said shell-core and being shiftable longitudinally and somethereof being hook-shaped at their 7 front-ends; a gearing actuatedautomatr.

cally when the shell-mantle is being opened and transmitting ,motion tosaid bearing rods, substantially and for the purpose as described. 1

5. In machine for casting stereotypeE- plates, in combination: ashell-mantle; a vertical spindle located laterally from said inantleandbeing hinged to ltLZLHOthGP YGF tical spindle; a 10111t-1QV6I' mechanismoint-- v ed at one end. to theesheltmantle and at the other end to saidlatter-spindle; and means i to .turn this spindle, the .arrangement'oithe;

parts being such that thesaid shell-mantle can beiopened and closed,aswell as locked in its closed position, by said joint-lever.-mechanisin-g a shtll-core arrang d. on; the

spindle mentioned in the second case; a plurality of bearing rodssupported in said shell-core and being shiftable longitudinally and somethereoi being hook-shaped at their front-ends; a gearing actuatedautomatically when the shell-mantle is being opened and transmittingmotion to said bearing rods, substantially and for the purpose asdescribed.

6. In a machine for casting stereotype plates, in combination: ashell-mantle; a vertical spindle located laterally from said mantle andbeing hinged to it: a locking disk connected with said shell-mantle; asystem of levers controlling the geat channels of the shell-mantle andbeing adapted to keep them closed if the said shell-mantle is notcompletely closed; a shell-core arranged on the spindle mentioned in thesecond case; a plurality of bearing rods supported in said shell-coreand being shiftable longitudinally and some thereof being l1ook shapedat their front-ends, a gearing actuated automatically when theshell-mantle is being opened and transmitting motion to said bearingrods, substantially and for the purpose as described.

7. In a machine for casting stereotype plates, the combination of aswinging shell. means for closing and opening said shell and locking thesame in closed position, a shellcore, a plurality of longitudinallymovable members supported in said shell-core and capable of locking; thecast stereotype plate in position and automatically controlled means formoving said members, when said shell is opened for removing said castplate from said shell-core.

In testimony whereof I afiix my signature,

VIKTOR STEPHAN.

